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https://www.readbyqxmd.com/read/28343718/-comparative-evaluation-of-dermoscopy-and-capillaroscopy-in-raynaud-s-phenomenon
#1
J Moreau, A-S Dupond, N Dan, T Untereiner, C Vidal, F Aubin
OBJECTIVE: Raynaud's phenomenon (RP) is a common cause for consultation. Capillaroscopy is a well-established technique to detect capillary abnormalities suggestive of a connective tissue disease, but it is sometimes unavailable. The aim of this study was to compare dermoscopy and capillaroscopy in the assessment of RP. METHODS: This was a prospective single-centre observational study in adult patients consulting for RP at the Hôpital Nord Franche-Comté between January 2014 and June 2015...
March 23, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28329592/giant-subungual-glomus-tumor-clinical-dermoscopy-imagiologic-and-surgery-details
#2
Ana Filipa Duarte, Osvaldo Correia, Hugo Barreiros, Eckart Haneke
Glomus tumor is a rare benign vascular hamartoma derived from the modified smooth muscle cells of the glomus body. Paroxysmal pain is the leading symptom. A 78-year-old woman presented at our clinic with a 50-year history of a slow growing painful purple blue tender nodule under the right fourth finger nail. Dermoscopy and magnetic ressonance confirmed the presence of a large subungual tumor and total surgical excision was performed after partial nail plate avulsion. Histologic examination confirmed a glomus tumor...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329573/a-diagnostic-challenge
#3
D Ismail, G Langman, S D Orpin
A 74 year-old woman presented with a 9 month history of a slowly enlarging exophytic lesion over her left nasal alar. Examination revealed a firm, cystic mass fixed to underlying skin. It was pedunculated with occasional superficial telangiectasia and a violaceous hue. A differential diagnosis of dermoid or sebaceous cyst, dermatofibroma, and neurofibroma was considered. Histopathological examination confirmed the rare diagnosis of chondroid syringoma (CS), which has a reported incidence of 0.01- 0.098% of excised skin tumors...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28317165/dermoscopic-findings-of-an-unusual-acral-nevus-on-the-hand-of-a-child
#4
Tracey N Liebman, Marla N Diakow, Sharon A Glick
Distinguishing benign acral nevi from small early acral melanomas may be challenging in certain cases. Dermoscopy is a noninvasive imaging technique that can help clinicians better visualize deeper lesion structures and thus more easily differentiate benign nevi from melanoma. We report the case of a 13-year-old girl with a changing dark brown to black macule with a central papular component on the volar surface of the right third finger. Dermoscopy revealed asymmetrically distributed irregular black blotches on a bluish-black background...
March 20, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28300916/porokeratosis-simulating-bowen-s-disease-on-dermoscopy
#5
Alzinira Sousa Herênio, Silvana Maria de Morais Cavalcanti, Emmanuel Rodrigues de França, Clarissa Marques Maranhão, Eliane Ruth Barbosa de Alencar
Porokeratosis is a disorder of epidermal keratinization characterized by the presence of annular hyperkeratotic plaques. Its etiopathogenesis is not yet fully understood, but a relationship with immunosuppression has been reported. Dermoscopic examination revealed a classic yellowish-white ring-like structure that resembled "volcanic crater contour" - the so-called cornoid lamella. We describe a case of porokeratosis in a female patient with chronic lymphedema, which was similar to Bowen's disease due to the many glomerular vessels seen on clinical examination and dermoscopy...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300909/multiple-cutaneous-melanomas-associated-with-gastric-and-brain-metastases
#6
Lara Caroline Grander, Fernanda Cabral, Alice Paixão Lisboa, Gabrielle Vale, Carlos Baptista Barcaui, Juan Manuel Pineiro Maceira
The occurrence of multiple primary melanomas in a single individual is rare. Most commonly, malignant melanocytic lesions subsequent to the initial diagnosis of melanoma are secondary cutaneous metastases. We report a patient with gastrointestinal bleeding from gastric metastasis of cutaneous melanoma. During clinical evaluation and staging, we discovered a brain metastasis associated with 3 synchronous primary cutaneous melanomas. We suggest the research on the mutation in the cyclin-dependent kinase inhibitor 2A (CDKN2A) (INK4a) in such cases...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300084/alopecia-areata
#7
REVIEW
C Herbert Pratt, Lloyd E King, Andrew G Messenger, Angela M Christiano, John P Sundberg
Alopecia areata is an autoimmune disorder characterized by transient, non-scarring hair loss and preservation of the hair follicle. Hair loss can take many forms ranging from loss in well-defined patches to diffuse or total hair loss, which can affect all hair-bearing sites. Patchy alopecia areata affecting the scalp is the most common type. Alopecia areata affects nearly 2% of the general population at some point during their lifetime. Skin biopsies of affected skin show a lymphocytic infiltrate in and around the bulb or the lower part of the hair follicle in the anagen (hair growth) phase...
March 16, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28296736/dermoscopic-features-of-livedoid-vasculopathy
#8
Stephen Chu-Sung Hu, Gwo-Shing Chen, Chi-Ling Lin, Yang-Chun Cheng, Yung-Song Lin
Livedoid vasculopathy (atrophie blanche) is a form of thrombotic vasculopathy. It is characterized by small ulcers that become crusted, and heal after several months to produce white atrophic scars. The most commonly affected sites are the lower legs, in particular the dorsum of the feet and ankles. To date, the dermoscopic features of livedoid vasculopathy have not been clearly described in the literature. In this observational study, we sought to evaluate the dermoscopic patterns of livedoid vasculopathy and determine whether the dermoscopic features are associated with certain histopathological characteristics...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28289898/comparison-of-dermoscopy-and-reflectance-confocal-microscopy-for-the-diagnosis-of-malignant-skin-tumours-a-meta-analysis
#9
REVIEW
Yi-Quan Xiong, Shu-Juan Ma, Yun Mo, Shu-Ting Huo, Yu-Qi Wen, Qing Chen
PURPOSE: Dermoscopy and reflectance confocal microscopy (RCM) are non-invasive methods for diagnosis of malignant skin tumours. The aim of this study was to compare the accuracy of dermoscopy and RCM for the diagnosis of malignant skin tumours. METHODS: Systematic electronic literature searches were conducted to include PubMed, Medline, Embase, the Cochrane Library database, and Web of Science, up to 26 April 2016. Pooled additional detection rate (ADR), diagnostic accuracy, and 95% confidence intervals (CIs) were calculated using STATA and Meta-Disc analysis...
March 13, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28286468/a-study-of-dermoscopic-features-of-nail-psoriasis
#10
Ahu Yorulmaz, Ferda Artuz
INTRODUCTION: Dermoscopy is a non-invasive imaging method that enables the evaluation of pigmented and non-pigmented skin lesions. More recently, dermoscopy has been recognized as an effective tool in the diagnosis of nail diseases. AIM: To evaluate the dermoscopic features of nail psoriasis and to assess the relationship between these features and disease severity. MATERIAL AND METHODS: A total of 67 patients with clinically evident nail psoriasis (14 women, 53 men) were prospectively enrolled...
February 2017: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/28280914/differentiation-of-pityriasis-rubra-pilaris-from-plaque-psoriasis-by-dermoscopy
#11
N E Abdel-Azim, S A Ismail, E Fathy
Pityriasis rubra pilaris (PRP) and plaque psoriasis (PP) are two distinctive erythemato-squamous skin diseases that often have to be differentiated from each other and from other similar dermatoses. Dermoscopy has been proven to aid the clinical diagnosis of several inflammatory disorders, minimizing the need for skin biopsy. Our aim was to determine the dermoscopic patterns of PRP compared to PP and to assess the significance of certain dermoscopic criteria in the diagnosis of PRP. This case-control study included 11 patients with biopsy proven PRP and 25 patients with biopsy proven plaque psoriasis...
March 9, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28278460/optoacoustic-dermoscopy-of-the-human-skin-tuning-excitation-energy-for-optimal-detection-bandwidth-with-fast-and-deep-imaging-in-vivo
#12
Mathias Schwarz, Dominik Soliman, Murad Omar, Andreas Buehler, Saak Ovsepyan, Juan Aguirre, Vasilis Ntziachristos
Optoacoustic (photoacoustic) dermoscopy offers two principal advantages over conventional optical imaging applied in dermatology. First, it yields high-resolution cross-sectional images of the skin at depths not accessible to other non-invasive optical imaging methods. Second, by resolving absorption spectra at multiple wavelengths, it enables label-free three-dimensional visualization of morphological and functional features. However, the relation of pulse energy to generated bandwidth and imaging depth remains poorly defined...
March 1, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28273283/rates-of-dermoscopy-use-for-melanoma-diagnosis-in-the-miami-va-medical-center
#13
Lucy L Chen, Erin X Wei, Fangchao Ma, Jonette Keri, Shasa Hu
No abstract text is available yet for this article.
March 8, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28268580/a-deep-bag-of-features-model-for-the-classification-of-melanomas-in-dermoscopy-images
#14
S Sabbaghi, M Aldeen, R Garnavi
Deep learning and unsupervised feature learning have received great attention in past years for their ability to transform input data into high level representations using machine learning techniques. Such interest has been growing steadily in the field of medical image diagnosis, particularly in melanoma classification. In this paper, a novel application of deep learning (stacked sparse auto-encoders) is presented for skin lesion classification task. The stacked sparse auto-encoder discovers latent information features in input images (pixel intensities)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268578/multi-scale-classification-based-lesion-segmentation-for-dermoscopic-images
#15
Mani Abedini, Noel Codella, Rajib Chakravorty, Rahil Garnavi, David Gutman, Brian Helba, John R Smith
This paper presents a robust segmentation method based on multi-scale classification to identify the lesion boundary in dermoscopic images. Our proposed method leverages a collection of classifiers which are trained at various resolutions to categorize each pixel as "lesion" or "surrounding skin". In detection phase, trained classifiers are applied on new images. The classifier outputs are fused at pixel level to build probability maps which represent lesion saliency maps. In the next step, Otsu thresholding is applied to convert the saliency maps to binary masks, which determine the border of the lesions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264830/diagnosing-malignant-melanoma-in-ambulatory-care-a-systematic-review-of-clinical-prediction-rules
#16
Emma Harrington, Barbara Clyne, Nieneke Wesseling, Harkiran Sandhu, Laura Armstrong, Holly Bennett, Tom Fahey
OBJECTIVES: Malignant melanoma has high morbidity and mortality rates. Early diagnosis improves prognosis. Clinical prediction rules (CPRs) can be used to stratify patients with symptoms of suspected malignant melanoma to improve early diagnosis. We conducted a systematic review of CPRs for melanoma diagnosis in ambulatory care. DESIGN: Systematic review. DATA SOURCES: A comprehensive search of PubMed, EMBASE, PROSPERO, CINAHL, the Cochrane Library and SCOPUS was conducted in May 2015, using combinations of keywords and medical subject headings (MeSH) terms...
March 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28258757/-frontal-fibrosing-alopecia-a-prospective-study-of-20%C3%A2-cases
#17
S Elloudi, S Gallouj, M Meziane, F-Z Mernissi, M Rimani
BACKGROUND: Frontal fibrosing alopecia (FFA) is a variant of lichen planopilaris predominantly affecting postmenopausal women. We report a series of 20 cases of FFA and describe the epidemiological, clinical, dermoscopic features and progress under treatment. PATIENTS AND METHODS: This was a prospective study conducted over a period of 16 months in patients seen at the dermatology department of the Hassan II University in Fez, Morocco. RESULTS: Mean patient age was 46 years...
February 28, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28244123/intraoperative-dermoscopic-features-of-onychomatricoma-a-review-of-10-cases
#18
E Ginoux, M Perier Muzet, N Poulalhon, S Debarbieux, S Dalle, L Thomas
BACKGROUND: Amelanotic nail tumours are difficult to diagnose. Dermoscopy is an accessible tool successfully used in diagnosis of amelanotic or melanotic skin tumours. We have previously shown the usefulness of dermoscopy in the preoperative diagnosis of onychomatricoma (OM). In this study, we completed this work by identifying additional intraoperative criteria to better establish the initial diagnosis of this tumour. AIMS: Evaluation of intraoperative dermoscopy in a small series of OM cases in order to define relevant diagnostic criteria...
February 28, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28243495/scabies-escaping-detection-until-dermoscopy-was-applied
#19
Aimilios Lallas, Zoe Apalla, Elizabeth Lazaridou, Elena Sotiriou, Efstratios Vakirlis, Dimitrios Ioannides
Dermoscopy is already considered a fairly established method for diagnosing scabies. This is because dermoscopy enables the visualization both of the burrow and the mite itself, forming the so-called "jet with a contrail" structure. In the present report we present an extraordinary case of a patient with scabies lesions on the face and neck, which was misdiagnosed during sequential visits and underwent unnecessary surgical diagnostic procedures. Finally, the diagnostic problem was solved when dermoscopy was applied...
January 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/28243494/arborizing-vessels-in-a-targetoid-hemosiderotic-hemangioma-mistaken-dermoscopic-diagnosis-of-basal-cell-carcinoma
#20
María L Enei, Francisco M Paschoal, Rodrigo Valdes
Targetoid hemosiderotic hemangioma (THH) or hobnail hemangioma (HH) is a benign vascular lesion that presents with the classical clinical presentation of a ring-shaped tumor having a targetoid appearance, with a central purple-brown papule surrounded by a thin pale area and an ecchymotic ring on the outside. Dermoscopic features and patterns of HH have been documented and have proven to be sufficient to establish a clinical diagnosis in many cases. We present a facial lesion in which both the clinical presentation and dermoscopy were atypical...
January 2017: Dermatology Practical & Conceptual
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